<!--
 * @FilePath     : /study_code/vue/principle4.html
 * @Description  :
 * @Date         : 2025-04-29 16:43:57
 * @Author       : Fang YingGui
 * @LastEditors  : fangyinggui 18715384437@163.com
 * @LastEditTime : 2025-04-29 16:52:02
-->
<!DOCTYPE html>
<html lang="en">
  <head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>documentName</title>
    <link rel="stylesheet" href="" />
  </head>

  <body>
    <p id="uname"></p>
    <button id="btn">修改数据</button>

    <script src="./principle4.js"></script>
  </body>
</html>
